Finding the Third Proportional to 28,641 and 62,790

Step by Step Solution

1. Step 1: Write the proportion equation
   28,641 : 62,790 = 62,790 : x
2. Step 2: Convert to fraction form
   28,641/62,790 = 62,790/x
3. Step 3: Cross multiply
   28,641x = 62,790 × 62,790
4. Step 4: Simplify right side
   28,641x = 3,942,584,100
5. Step 5: Solve for x
   x = 3,942,584,100/28,641
6. Step 6: Final answer
   x = 137,655.25